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Nematode larvae belonging to the genus Anisakis can cause the disease anisakiasis, a threat to human health. Shutterstock / WH_Pics

How to be sushi smart: tips on avoiding anisakis disease

Raw seafood dishes such as sushi, poke bowls and ceviche are increasingly popular, but can harbour fish-borne parasites. What’s the best way to protect ourselves?
Establishing the financial worth of a river’s fish is complicated when many people don’t sell the fish they catch. Tang Chhin Sothy/AFP via Getty Images

How much is the world’s most productive river worth? Here’s how experts estimate the value of nature

Putting a dollar value on nature has staunch opponents who say it’s morally wrong, but without it, building dams and other infrastructure can run roughshod over vital ecosystems.
Pam Longobardi amid a giant heap of fishing gear that she and volunteers from the Hawaii Wildlife Fund collected in 2008. David Rothstein

My art uses plastic recovered from beaches around the world to understand how our consumer society is transforming the ocean

Pam Longobardi collects and documents ocean plastic waste and transforms it into public art and photography. Her work makes statements about consumption, globalism and conservation.
Ivor Stuart/The Conversation

Exploding carp numbers are ‘like a house of horrors’ for our rivers. Is it time to unleash carp herpes?

Carp can make riverbeds look like golf balls – denuded and dimpled, devoid of any habitat. Releasing carp herpes virus is a controversial proposition, so let’s weigh up the risks and benefits.
When fish like this netted cod are exposed to mercury, it accumulates in certain organs, including the lenses of their eyes. Yvette Heimbrand

The lenses of fishes’ eyes record their lifetime exposure to toxic mercury, new research finds

A new study shows that a time stamp can be put on mercury that accumulates in fish eyes, offering a window into their lifetime exposure.
Researchers discovered five new species of black corals, including this Hexapathes bikofskii growing out of a nautilus shell more than 2,500 feet (760 meters) below the surface. Jeremy Horowitz

Scientists discover five new species of black corals living thousands of feet below the ocean surface near the Great Barrier Reef

Black corals provide critical habitat for many creatures that live in the dark, often barren, deep sea, and researchers are learning more about these rare corals with every dive.

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